. "Degrades a variety of glycosaminoglycans of the chondroitin-sulfate-and dermatan-sulfate type." . "Chondroitin sulfate, chondroitin-sulfate proteoglycan and dermatan sulfate are the best substrates but the enzyme can also act on hyaluronan at a much lower rate." . "The related enzyme EC 4.2.2.20 has the same substrate specificity but produces a mixture of oligosaccharides of different sizes that are ultimately degraded to tetra-and disaccharides." . "Both enzymes act by the removal of a relatively acidic C-5 proton of the uronic acid followed by the elimination of a 4-linked hexosamine, resulting in the formation of an unsaturated C4-C5 bond on the hexuronic acid moiety of the products." . . . "Chondroitinase" . "Chondroitinase ABC" . "Chondroitin ABC lyase" . "Chondroitin ABC eliminase" . "Chondroitin sulfate ABC lyase" . "ChS ABC lyase" . "Chondroitin-sulfate-ABC exolyase" . "Chondroitin sulfate ABC exoeliminase" . "Chondroitin sulfate ABC exolyase" . "ChS ABC lyase II" . . . "Exolytic removal of Delta(4)-unsaturated disaccharide residues from the non-reducing ends of both polymeric chondroitin/dermatan sulfates and their oligosaccharide fragments." .